"I'm from India and would like to know whether there are openings available for linux admin freshers in the US?.... Can I get a job as linux admin trainee in the US..(especially in and
around Maryland)....? ..please suggest appropriately...."
I live in the area that rpm is asking about. We have a huge number of immigrants in the area because our robust economy attracts people from all over the world. It is difficult to land a job from India or other foriegn countries so what skilled immigrants usually do is come to this area (Washington, D.C. including parts of Maryland and Virginia) and take the first job that they can find. This might be something like a store clerk at $7 per hour. Or perhaps I should say jobs. It is cheaper for American businesses to hire part time help than full time workers because the full time workers are entitled to insurance, vacations, and so forth, and part time workers are not. So an immigrant ends up working three or four jobs with less than 16 hours per week in each job.
After getting established in low paying part time jobs then the skilled immigrant can start looking for a good, high paying, full time job in their specialty. This could take a while because an immigrant can have trouble proving that he/she is qualified for a skilled job since a potential employer has trouble checking the immigrant's resume.
While wages are much higher in the U.S. than in India so are expenses. That is why immigrants tend to live in overcrowded conditions to share expenses until they get on their feet financially. That can take 5 or 6 years. I presume that you are interested in Maryland because you have friends or relatives there who you can live with in the beginning.
Be prepared. Create a LifeBoat CD.